Hydrothermal synthesis of stable metallic 1T phase WS2nanosheets for thermoelectric application

doi:10.1088/1361-6528/aa9bfe

	Hydrothermal synthesis of stable metallic 1T phase WS2nanosheets for thermoelectric application
	Piao, Mingxing 1; Chu, Jin1 ; Wang, Xiao1 ; Chi, Yao 1; Zhang, Heng 1; Li, Chaolong1 ; Shi, Haofei1 ; Joo, Min-Kyu 2
刊名	Nanotechnology
	2018
卷号	29 期号:2
ISSN号	09574484
DOI	10.1088/1361-6528/aa9bfe
英文摘要	Two-dimensional materials have gained great attention as a promising thermoelectric (TE) material due to their unique density of state with confined electrons and holes. Here, we synthesized 1T phase tungsten disulfide (WS2) nanosheets with high TE performance via the hydrothermal method. Flexible WS2nanosheets restacked thin films were fabricated by employing the vacuum filtration technique. The measured electrical conductivity was 45 S cm-1with a Seebeck coefficient of +30 μV K-1at room temperature, indicating a p-type characteristic. Furthermore, the TE performance could be further improved by thermal annealing treatment. It was found the electrical conductivity could be enhanced 2.7 times without sacrificing the Seebeck coefficient, resulting in the power factor of 9.40 μW m-1K-2. Moreover, such 1T phase WS2nanosheets possess high phase stability since the TE properties maintained constant at least half one year in the air atmosphere. Notably, other kinds of 1T phase transitional metal dichalcogenides (TMDCs) with excellent TE performance also could be imitated by using the procedure in this work. Finally, we believe a variety of materials based on 1T phase TMDCs nanosheets have great potential as candidate for future TE applications. © 2017 IOP Publishing Ltd.
电子版国际标准刊号	13616528
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/8053]
专题	中国科学院重庆绿色智能技术研究院
作者单位	1.Key Laboratory of Multi-Scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing; 400714, China; 2.Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Suwon; 16419, Korea, Republic of
推荐引用方式 GB/T 7714	Piao, Mingxing,Chu, Jin,Wang, Xiao,et al. Hydrothermal synthesis of stable metallic 1T phase WS2nanosheets for thermoelectric application[J]. Nanotechnology,2018,29(2).
APA	Piao, Mingxing.,Chu, Jin.,Wang, Xiao.,Chi, Yao.,Zhang, Heng.,...&Joo, Min-Kyu.(2018).Hydrothermal synthesis of stable metallic 1T phase WS2nanosheets for thermoelectric application.Nanotechnology,29(2).
MLA	Piao, Mingxing,et al."Hydrothermal synthesis of stable metallic 1T phase WS2nanosheets for thermoelectric application".Nanotechnology 29.2(2018).